Furnace



- (N0 Model.) 2 Sheets-Sheet 1.

J.- L. JUDGE.

FURNACE.

No. 367,638. Patented Aug. 2, 1887.

N. PETERS. Fhmwlilhe ra ber. Washington. D, c.

(No Model.) 2 Sheets -Sheet 2.

J. L. JUDGE."

FURNACE.

No. 367,638. Patented Aug. 2, 1887.

m I n U n (I a IIII'IIIII I N. PETERS Phelmhlbognpher. Washington. D. c

by short ducts I.

UNITED STATES PATENT ()FFICE.

JAMES L. JUDGE, OF MILWAUKEE, \VISCONSIN.

FURNACE.

SPECIFICATION forming part of Letters Patent No. 367,638, dated August2, 1387.

Application iilcd July 11, 1884. Serial No. 137,423.

To aZZ whom it may concern.-

Be it known that I, JAMES L. JUDGE, a citizen of the UnitedStates,rcsiding at Milwaukee, in the county of Milwaukee and StateofWiscousin, have invented certain new and useful to letters or figuresof reference marked thereon,which form a part of this specification.

My invention relates to improvements in furnaces for burning soft coal;and it pertains to certain combinations and arrangements of the parts,as herein set forth, and distinctly pointed out in the claims.

My invention is further explained by reference to the accompanyingdrawings,in which Figure 1 represents a longitudinal section of theinclosing-walls, showing a side View of the flues. Fig. 2 is an endview. I Fig. 3 is a top View. Figs. 4 and 5 are details.

Like parts are represented by the same reference-letters throughout theseveral views.

A is the inclosingwall, which may be made of sheet metal, butispreferably made of brick, as shown.

B is the fire-box or combustion chamber in which the coal is burned.

O is the grate to the ii re-box, beneath which is an ash-box andair-passage, D.

EE are a series of fines which are arranged at right angles to the firebox, as shown in Fig. 1, having their frontends only extended above thefire-box. The lower series of fines are connected at their front ends tothe firebox by ducts F, while the rear ends of the up per and lowerseries of fines are in like manner connected together by the short ducts G, and the upper sides of the upper fines are all connected withthe horizontal smoke-pipe H Those connections only which are between thefirst 'two lines of the series are shown. The other lines in the seriesare, however, connected in like manner to each other and to the fire-boxand pipe.

Fire being started in the combustion-chamber B, the heat, flame, andother products of combustion pass up through the duct F into the frontend. of the lower series of lines E,

(No model.)

and from thence rearward and up through the ducts G into the upperseries of fines E, then forward through the upper series to and upthrough the ducts I into the smoke-pipe H, through which pipe theyescape to the chimney or open air.

To facilitate the cleaning of the fines E E their front ends areextended forward through the wall of the furnace and provided withclosely-fitting doors J ,which are either hinged to the end flanges, K,of the fines or secured thereto at their upper ends by a pivotal bolt,L, as shown. hen it is desired to clean the lines, the doors of theupper series are first opened and a scraper is inserted, the blade ofwhich nearly fills the open space in the due. This is pushed rearward,carrying before it all the soot and accumulations to the rear end ofsuch lines, when it falls through the ducts G into the rear ends of thelower fines. All the upper ll ucs bein' g thus eleaned,the scraper isinserted into the lower series, and the soot is thereby drawn forward tothe duct F,through which it falls into the combustion-chamber, passingthrough the same to the ash-box be low,when it is readily removed withthe ashes.

The hot-air chamber through which they flues E E extend is subdividedinto six compartments, M, by the central partition, N, and the twotransverse partitions O O. The number of compartments may, however, beincreased or diminisheth'as desired. The several partitions N and Oextend from beneath the fines to the top plate or cover, I, as shown inFigs. 1 and 2. Thus it'is obvious that all the heat of the radiators isequally subdivided into compartments, so that the several pipes, whichare each connected with their separate apartments, 'can each appropriateits proportional share of heat only.

An air-space, It, is formed upon the respect-- W are hot-.air pipeswhich communicate between the hot-air chamber and the room to be heated,terminating beneath the registers A in the chamber B. The exterior pipe,U, terminates at its upper end in the chamber 0. That part of theregister which covers the chamber B is provided with the ordinary device for closing it and controlling the admission of warm air. That partof the register outside of the hot-air chamber over chamber 0' isperforated for the passage of air, so that.

as the warm air is admitted into a room, not otherwise ventilated,through the center pipe, V, the cool air is permitted to pass down tothe heatingchamber through the pipe U. \Vhen, however, the room is soventilated that a down current is prevented, the moderatelyheated airwill enter the room from the ex terior pipe, and thus keep up a moderateheat in the room while the center of the register is closed. Both theinterior and exterior air chambers are in constant open communicationwith the inlet aiepipe M at the bottom of the furnace, as shown in Fig.1, and as the air in the exterior chamber becomes moderately heated byheat radiating from the vertical walls T and passes up through theexterior pipe, U, it is supplied from below through said pipe M.

D are doors formed through the partitions above the radiators or fines,by which any two or more of the apartments M may be thrown open to eachother, whereby all or any fractional part of the heat contained in thehot-air chamber may, by closing the dampers in the hcatingriipcs, bethrown into a single room.

E are rods for opening doors D.

The lower end of the duct F is connected to the upper edges of the sidesof the firebox B and closing the by the device shown in detail in Fig.5, in,

its edge, and the upper edge of the sides H H are beveled, as shown. Thecover being inserted between the sides H, the copper strip G is turneddown over and pressed firmly upon such edge. This done, a V-shaped cap,I, is placed above and upon the copper strip, extending its entirelength. A series of brackets, J, are then bolted to the sides of thefirebox,H H, extending above their upper edges and provided with arms Kand nuts L. The nuts L are then turned down upon a screwcut threadformed upon the upper ends of the brackets J, thus pressing the arms Kdown firmly upon the plate or rider 1, whereby the copper strip is helddown firmly upon the edges of the firebox and a gas-tight joint therebyformed which will not be affected by expansion.

M is a duct through which exterior air enters beneath theradiatingllucs.

Having thus described my invention, what. I claim as new,and desire tosecure by Letters Patent, is-

1. The combination, with a furnace having interior and exterior wallsand an airspace between said walls, of the interior pipe, V,communicating with the interior chamber,the exterior pipe, U,communicating with the airspace between said walls, chambers B and O,and register A, said chamber B communicating with the room through thecentral. part of the register A, while the exterior chamber, 0, servesas a medium of communication through openings in the n'iarginal edge ofsaid register with the exterior pipe, as set forth.

2. The coi'nbinatiou, with the vertical walls H H of thecombustion-chamber,ofthe cover 1 provided with sheet-copper flanges G,V- shaped caps 1, series of arms K, and retaining-brackets J, providedwith nuts L, all sub stantially as and for the purpose specified.

In testimony whereof I aflix my signature in presence of two witnesses.

JAMES L. JUDGE.

Vitnesses:

' C. T. Bnunmcr, XVM. SINNOT'r.

